A Victorian scientist has questioned the evidence of foxes breeding in Tasmania.

Dr Clive Marks is the former head of Victoria's vertebrate pest branch and has studied fox biology for more than 10 years.

He has published a lengthy article on a Tasmanian website questioning some of the breeding evidence.

Dr Marks says that fox breeding dens are not difficult to find and he is surprised that one has not been located in the state.

He has also pointed out that while there have been 56 fox scats found in Tasmania, they appear to be from different foxes.

He says usually foxes drop up to eight scats per day and he would expect more scats to be from the same animal.

Dr Marks has called for more scientific research to verify the fox scats and for a review of the eradication program.

Former professional shooter Ian Rist welcomes the report.

"Foxes scent mark their boundaries with urine and scats and if you found one scat you would be finding five or six or seven or eight scats from the one fox, it just doesn't add up," he said.

Independent MLC Ivan Dean is again calling for a review of the fox eradication taskforce.

Mr Dean says if the State Government continues to plough money into the eradication taskforce it must make sure its strategies are right.

He says baiting is not the answer.

"There is no evidence to my knowledge anywhere in the world to demonstrate that the 1080 fox baiting has been successful and here we are with the extra monies that have been provided to the fox taskforce.," he said.

"Now that money, we have been told, is for the purposes of a fox baiting program."

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